Dear All,
Finally we have resolved the issue with the help of below note wherein the ERP structure BAPIEKPOC fields were not matching with the SRM structure BBPEKPOC46C.
2042219 - PO cannot be confirmed: new fields REQ_SEGMENT / STK_SEGMENT in SRM or ERP structures
As per the SAP note, we have added two fields (REQ_SEGMENT, STK_SEGMENT) in ECC structure and it has started working. I hope this will be useful for someone in future. Thanks for your all your help and suggestions.
Best Regards,
Bharathi